Allopregnanolone Impurity 1 CAS 2220-64-6
| CAS No. | 2220-64-6 |
| Molecular Formula | C21H36O3 |
| Molecular Weight | 336.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Allopregnanolone Impurity 1.
Allopregnanolone Impurity 1 (CAS 2220-64-6) is a high-purity analytical reference standard with the molecular formula C21H36O3 and a molecular weight of 336.51 g/mol.
Structurally, Allopregnanolone Impurity 1 (C21H36O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 336.51 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C21H36O3 |
| Molecular Weight | 336.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Allopregnanolone Standards
- Allopregnanolone Impurity 2 (CAS 481-10-7)
- (3α)-Allopregnanolone-d5 (CAS CATO-CCAD302750)
- (3α)-Allopregnanolone (CAS 516-54-1)
- Allopregnanolone Acetate (CAS 906-83-2)
- Allopregnanolone-D5 B-D-Glucuronide (CAS 31300-86-4)
- (3α)-Allopregnanolone Sulfate Pyridinium Salt (CAS 1177357-94-6)
- Allopregnanolone Sulfate-D5 (CAS 215996-42-2)
Recommended Standards
- 5α-PREGNAN-3β, 17, 20β-TRIOL (CAS 520-86-5)
- Furan-2-ylmethyl palmitate (CAS 95668-36-3)
- 5-Butyl-2-(4-(trans-4-propylcyclohexyl)phenyl)pyrimidine (CAS 98495-18-2)
- Methyl 2-chloro-3-iodoimidazo[1,2-a]pyridine-7-carboxylate (CAS 2734860-30-9)
- 1-(propan-2-yl)piperidine-3-carbaldehyde (CAS 1248558-73-7)
- 4-Oxaspiro[2.5]octan-7-one (CAS 1359869-22-9)
- (2E 5E)-2,5-Bis(4-(diethylamino)benzylidene)cyclopentanone (CAS 261360-66-1)
- Methadone Impurity 18 (CAS 748166-19-0)
- Cis-vaccenoylchloride (CAS 95548-26-8)
- Propofol Impurity 28 (CAS 40388-51-0)
- Tetrabenazine Impurity 40 (CAS 135675-32-0)
- 1-Benzyl-3-(2-chloropropanoyl)urea (CAS 879361-72-5)
- 5-Bromo-2-chlorobenzamide (CAS 188774-55-2)
- [D-His1]-Semaglutide (CAS CATO-C4X-2226127)
Why CATO?
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